<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1" />
    <title>React App</title>
  </head>
  <!-- 
    合成事件 reat16及之前的版本都是挂载到document对象中 body
    react17挂载到容器节点上 root
    https://blog.csdn.net/weixin_49477258/article/details/127402466
   -->
  <body>
    <div id="root"></div>
  </body>
</html>
